8 wiring of the computer link, One to one configuration – Toshiba SX 2000 User Manual
Page 158
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4.8 Wiring of the computer link
4.8 Wiring of the computer link
Cable connection examples show as below.
• Below figure shows an example of cable connection using the RS-232C/RS-485
converter (ADP-6237B).
• Use shielded twisted-pair cable for data communication suited to RS-485
standard. The cable shield should be connected to single -point ground.
One to one configuration
Master
computer
TXD
RXD
RTS
CTS
SG
DTR
DSR
CD
RS-232C
(max. 15m)
RS-232C/RS-485 converter
(ADP-6237B)
3
RXD
TXA
2
TXD
TXB
5
CTS
RXA
4
RTS
RXB
7
SG
SG
6
DSR
TERM
20
DTR
FG
8
CD
1
FG
25-pin
connector
Terminal
block
---
S2T
30C
RXA
RXB
TXA
TXB
SG
TERM
RS-485
(max. 1km)
Terminal
block
On the S2T, removable terminal block is provided for cable connection.
Short between RXA and TERM for termination at both the S2T and the
ADP-6237B.
If the master has RS-485 (or RS-422) interface and the S2T is connected to the
master directly, connect termination resistor 1/2 W - 1 2 0 Q between RXA and RXB
at the master end.
B
6F8C0926
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